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document.getElementByName('audio').src = 'xxx.mp3?'+Date.now()
document.getElementsById('insert_audio').src = 'xxx.mp3?'+Date.now()
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
</head>
<body>
<audio preload="none" src="aaa"></audio>
</body>
<script type="text/javascript">
jQuery("audio").each(function(i){
jQuery(this).attr("src", jQuery(this).attr("src") + "?aaaaaa=" + Math.random());
});
</script>
</html>